atppc_acpi.c revision 1.21
1 /* $NetBSD: atppc_acpi.c,v 1.21 2020/12/13 08:20:56 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jaromir Dolecek. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: atppc_acpi.c,v 1.21 2020/12/13 08:20:56 martin Exp $"); 34 35 #include "opt_atppc.h" 36 37 #include <sys/param.h> 38 #include <sys/device.h> 39 #include <sys/systm.h> 40 #include <sys/termios.h> 41 42 #include <dev/acpi/acpivar.h> 43 #include <dev/acpi/acpi_intr.h> 44 45 #include <dev/ic/atppcvar.h> 46 47 #include <dev/isa/isadmavar.h> 48 #include <dev/isa/atppc_isadma.h> 49 50 static int atppc_acpi_match(device_t, cfdata_t, void *); 51 static void atppc_acpi_attach(device_t, device_t, void *); 52 53 struct atppc_acpi_softc { 54 struct atppc_softc sc_atppc; 55 56 isa_chipset_tag_t sc_ic; 57 int sc_drq; 58 }; 59 60 CFATTACH_DECL_NEW(atppc_acpi, sizeof(struct atppc_acpi_softc), atppc_acpi_match, 61 atppc_acpi_attach, NULL, NULL); 62 63 /* 64 * Supported device IDs 65 */ 66 67 static const char * const atppc_acpi_ids[] = { 68 "PNP04??", /* Standard AT printer port */ 69 NULL 70 }; 71 72 static int atppc_acpi_dma_start(struct atppc_softc *, void *, u_int, 73 u_int8_t); 74 static int atppc_acpi_dma_finish(struct atppc_softc *); 75 static int atppc_acpi_dma_abort(struct atppc_softc *); 76 static int atppc_acpi_dma_malloc(device_t, void **, bus_addr_t *, 77 bus_size_t); 78 static void atppc_acpi_dma_free(device_t, void **, bus_addr_t *, 79 bus_size_t); 80 /* 81 * atppc_acpi_match: autoconf(9) match routine 82 */ 83 static int 84 atppc_acpi_match(device_t parent, cfdata_t match, void *aux) 85 { 86 struct acpi_attach_args *aa = aux; 87 88 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 89 return 0; 90 91 return acpi_match_hid(aa->aa_node->ad_devinfo, atppc_acpi_ids); 92 } 93 94 static void 95 atppc_acpi_attach(device_t parent, device_t self, void *aux) 96 { 97 struct atppc_softc *sc = device_private(self); 98 struct atppc_acpi_softc *asc = device_private(self); 99 struct acpi_attach_args *aa = aux; 100 struct acpi_resources res; 101 struct acpi_io *io; 102 struct acpi_drq *drq; 103 ACPI_STATUS rv; 104 105 sc->sc_dev_ok = ATPPC_NOATTACH; 106 107 sc->sc_dev = self; 108 109 /* parse resources */ 110 rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS", 111 &res, &acpi_resource_parse_ops_default); 112 if (ACPI_FAILURE(rv)) 113 return; 114 115 /* find our i/o registers */ 116 io = acpi_res_io(&res, 0); 117 if (io == NULL) { 118 aprint_error_dev(sc->sc_dev, "unable to find i/o register resource\n"); 119 goto out; 120 } 121 122 /* find our DRQ */ 123 drq = acpi_res_drq(&res, 0); 124 if (drq == NULL) { 125 aprint_error_dev(sc->sc_dev, "unable to find drq resource\n"); 126 goto out; 127 } 128 asc->sc_drq = drq->ar_drq; 129 130 /* Attach */ 131 sc->sc_iot = aa->aa_iot; 132 sc->sc_has = 0; 133 asc->sc_ic = aa->aa_ic; 134 135 sc->sc_dev_ok = ATPPC_ATTACHED; 136 137 if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length, 0, 138 &sc->sc_ioh) != 0) { 139 aprint_error_dev(self, "attempt to map bus space failed, device not " 140 "properly attached.\n"); 141 goto out; 142 } 143 144 sc->sc_ieh = acpi_intr_establish(self, 145 (uint64_t)(uintptr_t)aa->aa_node->ad_handle, 146 IPL_TTY, false, atppcintr, self, device_xname(self)); 147 if (sc->sc_ieh == NULL) { 148 aprint_error_dev(self, "unable to establish interrupt\n"); 149 goto out; 150 } 151 152 /* setup DMA hooks */ 153 if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) { 154 sc->sc_has |= ATPPC_HAS_DMA; 155 sc->sc_dma_start = atppc_acpi_dma_start; 156 sc->sc_dma_finish = atppc_acpi_dma_finish; 157 sc->sc_dma_abort = atppc_acpi_dma_abort; 158 sc->sc_dma_malloc = atppc_acpi_dma_malloc; 159 sc->sc_dma_free = atppc_acpi_dma_free; 160 } 161 162 sc->sc_has |= ATPPC_HAS_INTR; 163 164 /* Run soft configuration attach */ 165 atppc_sc_attach(sc); 166 out: 167 acpi_resource_cleanup(&res); 168 } 169 170 /* Start DMA operation over ISA bus */ 171 static int 172 atppc_acpi_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes, 173 u_int8_t mode) 174 { 175 struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc; 176 177 return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode); 178 } 179 180 /* Stop DMA operation over ISA bus */ 181 static int 182 atppc_acpi_dma_finish(struct atppc_softc * lsc) 183 { 184 struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc; 185 186 return atppc_isadma_finish(sc->sc_ic, sc->sc_drq); 187 } 188 189 /* Abort DMA operation over ISA bus */ 190 int 191 atppc_acpi_dma_abort(struct atppc_softc * lsc) 192 { 193 struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc; 194 195 return atppc_isadma_abort(sc->sc_ic, sc->sc_drq); 196 } 197 198 /* Allocate memory for DMA over ISA bus */ 199 static int 200 atppc_acpi_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr, 201 bus_size_t size) 202 { 203 struct atppc_acpi_softc * sc = device_private(dev); 204 205 return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 206 } 207 208 /* Free memory allocated by atppc_isa_dma_malloc() */ 209 static void 210 atppc_acpi_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr, 211 bus_size_t size) 212 { 213 struct atppc_acpi_softc * sc = device_private(dev); 214 215 return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size); 216 } 217
Indexes created Thu Sep 25 16:09:42 GMT 2025